<!doctype html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <title>下载</title>
    <link rel="stylesheet" href="{{ url_for('static', filename='styles.css') }}">
  </head>
  <body>
    <div class="container">
      <h1>已完成</h1>
      <a href="{{ url_for('download_file', filename=filename) }}">点击下载</a>
    </div>
  </body>
</html>